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Husqvarna HU675AWD Support Question

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Question posted by Shall2home on October 31st, 2016

Engine Runs Way Too Fast And Shakes. Started After Hitting A Rock.

Any way to get the throttle backed down. Seems to be fully automatic. Not sure how hitting a rock could cause the throttle to go max out. Shut off and restarts way overthrottled.

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Answer #1: Posted by waelsaidani1 on October 31st, 2016 3:32 PM

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Here are some other common problems to check:

Spark Plug Gap: Check the spark plug with a spark plug gap gauge to make sure the gap is set to the distance specified in the manual for your lawn mower. A spark plug with the wrong gap setting can quickly become fouled with carbon from not firing properly.
Air Filter: Check to be sure the air filter on your lawn mower is clean, and replace or clean it (depending on the type filter) if needed. A dirty air filter is one of the most common causes of a poorly running lawn mower, since it starves the engine of the oxygen needed for combustion.
Fuel Filter: Check the fuel filter on the mower to make sure it's clean, and replace it if needed. A clogged fuel filter restricts the flow of gasoline to the engine, starving it of fuel.
Gasoline: Using gas with 10% ethanol is believed to cause problems in small engines like lawn mowers by gumming up the carburetor.

Related Husqvarna HU675AWD Manual Pages

Owners Manual - Page 2

...cause cancer and birth defects or other objects that may richochet back toward anyone enters the area. • Do not operate the mower...• Be sure the area is clear ...lawn mower and a minimum of 16 years of age before starting the engine (motor). • If the equipment should not be maintained in ﬂuence of objects such as rocks, tree limbs, etc. • Watch for the cause...

Owners Manual - Page 3

... deterioration, which could expose moving parts or allow objects to prevent accidental starting. • Keep nuts and bolts, especially blade attachement bolts, tight ... designed, engineered and manufactured to cool before restarting. • Never attempt to make adjustments or repairs with the engine running. Replacegascap;tightensecurely. Gasoline is spilled on your lawn mower. •...

Owners Manual - Page 4

ASSEMBLY Read these instructions and this manual. IMPORTANT: THIS LAWN MOWER IS SHIPPED WITHOUT OIL OR GASOLINE IN THE ENGINE. Use the correct tools as nuts, washers, bolts, etc., necessary to assemble or operate your new lawn mower. Remove loose parts included with lower ("standard") knobs. 3. Insert handle bolts through lower handles and handle brackets; Remove...

Owners Manual - Page 5

.... 3 FRAME OPENING CONTROL BAR UPPER HANDLE ROPE GUIDE T-KNOB ENGINE STARTER ROPE FIG. 4 TO INSTALL ATTACHMENTS Your lawn mower was shipped ready to bagging or discharging, see "TO CONVERT MOWER" in warm water for a few minutes. To convert mower to be used as a mulcher. Slowly pull engine starter rope out until rope will slip into grass...

Owners Manual - Page 6

... safety standards of various controls and adjustments. The use in this manual for starting the engine. OPERATOR PRESENCE CONTROL BAR - used to 10% ethanol (E10) is running. Save this machine. NOTE: Gasoline containing up to engage power-propelled forward motion lawn mower. Learn and understand their meaning. Consumer Product Safety Commission. DRIVE CONTROL BAR - must...

Owners Manual - Page 7

...CAUSE YOUR MOWER TO "CREEP" FORWARD WHEN CONTROL BAR IS RELEASED. 4. ROTATE LEVER TOWARD ENGINE TO LOWER MOWER PLATE TAB LEVER ROTATE LEVER AWAY FROM ENGINE TO RAISE MOWER...lawn mower or performing any circumstances attempt to start and operate the mower. Also, 9-position adjusters (if so equipped) allow lever to be positioned behind the mower...the engine is running. • Your lawn mower is...

Owners Manual - Page 8

... sure lawnmower is shipped without oil in the Maintenance section of this manual. Remove oil ﬁll cap/dipstick from bag using the frame handle. 2. You recieve a container of the lawn mower...ll spout into the engine. 4. You may need to change the oil more often under lawn mower handle. 3. Do not mix oil with a minimum of tank ﬁller neck. BEFORE STARTING ENGINE ADD OIL (See Fig...

Owners Manual - Page 9

... mulched grass. MOWING TIPS CAUTION: Do not use and catchers will damage your mower and could void your lawn when it is overgrown it may require that an area be emptied before starting. • To start the engine and let it run the lawn mower over the area a second time. • For extremely heavy cutting, reduce the width...

Owners Manual - Page 10

... Replace Air Filter Paper Cartridge Empty fuel system or add Stabilizer * (if so equipped) ** Electric-Start mowers *** Power-Propelled mowers **** Use a scraper to properly maintain your engine run better and last longer. • Follow the maintenance schedule in this lawn mower does not cover items that have been subjected to see if you should make any of...

Owners Manual - Page 11

... a qualiﬁed service center. 2. Be sure key in adapter and crankshaft keyway are up toward the engine. 5. MAINTENANCE LAWN MOWER Always observe safety rules when performing any trash or grass cuttings from spark plug and place wire where it cannot come in contact with plug. 2. Put wheels back in place. Using a blade not approved...

Owners Manual - Page 12

... year. DO NOT overﬁll, or engine will not run properly and may be sure to retighten oil dipstick before starting engine. 9. Replace the air ﬁlter every 100...12 TO CHANGE ENGINE OIL (See Fig. 14) NOTE: Before tipping lawn mower to drain oil, empty fuel tank by running engine until the blade is balanced, it cannot come in a horizontal position. Rock lawn mower back and forth to...

Owners Manual - Page 13

... and check for a full minute to clean the outside of your lawn mower by scraping to remove build-up any spilled gasoline. Shut off the engine. 7. SPARK PLUG Replace spark plug at the ﬁt- IMPORTANT: BE SURE THE GARDEN HOSE IS NOT ROUTED UNDER THE LAWN MOWER HOUSING OR ENTANGLED IN THE WHEELS. 5. NOTE: Water, grass and...

Owners Manual - Page 14

Release control bar and stop engine. 2. Remove blade bolt, lockwasher, hardened washer and blade. 3. Remove drive cover. Make sure the blade and all moving parts have completely stopped. 3. Disconnect cable from rear bafﬂe / rear gearcase belt keeper. 6. LAWN MOWER TO ADJUST CUTTING HEIGHT See "TO ADJUST CUTTING HEIGHT" in contact with air ﬁlter...

Owners Manual - Page 15

... FRONT BELT KEEPER IDLER PULLEYS FIG. 19 15 SERVICE AND ADJUSTMENTS 8. Remove belt from mower and discard. Remove all three idler pulleys. 6. Remove belt from idler assembly. 11. Position the blade adapter/engine pulley on the engine crankshaft. Be sure key in the Operation section of the new belt through idler assembly to upright...

Owners Manual - Page 16

... all dirt, grease, leaves, etc. LAWN MOWER When lawn mower is to the rear. 2. Store in... carburetor is running too fast or too slow, take your mower for storage at... the end of the season or if the unit will not be stored for a period of time, clean it to an authorized service center for 30 days or more. Be sure that the engine...

Owners Manual - Page 17

... in your gasoline will cause your unit with gasoline in any enclosure. 17 CAUTION: Never store the lawn mower with a suitable protective cover that does not retain moisture. Run engine at least 10 minutes ... COVER MOWER WHILE ENGINE AND EXHAUST AREAS ARE STILL WARM. ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM OF AN ENGINE WHILE IN STORAGE. • Empty the fuel tank by starting the engine and ...

Owners Manual - Page 18

...lawn mower housing or cutting blade dragging in released position. 8. Buildup of mower housing. 5. Clean underside of grass, leaves and trash under mower. 1. uneven 1. Replace blade. Clean underside of fuel. 2. Bent engine... 18 TROUBLESHOOTING POINTS PROBLEM CAUSE CORRECTION Does not start 1. Clean/replace air ﬁlter. 2. Out of mower housing. Fuel valve lever...

Owners Manual - Page 19

... be covered separately by a separate emission control warranty statement supplied with LCT engines). This Limited Warranty does not cover general maintenance parts and items ("Expendable Parts... preventative maintenance, storage, fuel and oil usages as throttle cable, belt guides adjustments; Certain components (e.g., engines and transmissions) are NOT manufactured by this Limited Warranty...

Owners Manual - Page 20

..., varnish, stale fuel, or any starting fluids; (i) Pressure cleaning or steam ...running engines above specified and recommended engine speeds as listed in material or workmanship, and therefore are NOT covered. mechanical components/parts such as prescribed in material or workmanship. are NOT covered: (a) Abrasion to mower decks, including sand wear; (b) Damage to cutting equipment by way...

Parts List - Page 3

...81-34 39 585 90 07-03 40 585 90 08-03 DESCRIPTION Upper Handle Assembly Cable, Engine Zone Control Bracket, Upstop Handle Knob, Star Screw #10-16 x 5/8 Control Bar, Overmolded... Spanish 3 NOTE: All component dimensions given in U.S. HU675AWD (96143010801) PRODUCT NO. 961 43 01-08 KEY PART NO. Failure to do so could be hazardous, damage your lawn mower and void your warranty. HUSQVARNA ROTARY...